145301715 has 32 divisors (see below), whose sum is σ = 278187840. Its totient is φ = 71532288.

The previous prime is 145301711. The next prime is 145301729. The reversal of 145301715 is 517103541.

It is not a de Polignac number, because 145301715 - 2² = 145301711 is a prime.

It is a super-2 number, since 2×145301715² = 42225176763882450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (145301711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39642 + ... + 43151.

It is an arithmetic number, because the mean of its divisors is an integer number (8693370).

Almost surely, 2^145301715 is an apocalyptic number.

145301715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145301715 is a deficient number, since it is larger than the sum of its proper divisors (132886125).

145301715 is a wasteful number, since it uses less digits than its factorization.

145301715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82820 (or 82814 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 145301715 is about 12054.1161019794. The cubic root of 145301715 is about 525.7229224497.

The spelling of 145301715 in words is "one hundred forty-five million, three hundred one thousand, seven hundred fifteen".